I'm sure he said that in the initial police interview.
NEVER EVER SPEAK TO THE POLICE. Ask for your lawyer instead.
“NEVER EVER SPEAK TO THE POLICE. Ask for your lawyer instead.”
The shooter is not all that bright.
He knew there was a video, and I assume he knew that lawyers exist.
He spoke before seeing the video and prior to consulting an attorney.
He would have had a difficult case to defend, but lying did him no good.